[FEATURE REQUEST] Add slash command to show tool usage summary

[FEATURE REQUEST] Add slash command to show tool usage summary

What I'd like

A slash command (e.g., /tools-summary) that displays a chronological list of all tools Claude used during the conversation, especially bash commands, to improve observability and learning.

Why

In long agentic requests, Claude can use dozens or even hundreds of tools across multiple steps, but there's currently no concise way to see this tool usage history. Users lose visibility into Claude's problem-solving process, making it hard to learn from Claude's bash patterns or understand the exploration path taken. This lack of observability is particularly acute in complex multi-step tasks where Claude might search, read, edit, and test across many files.

Example

After a long agentic task, typing /tools-summary would show:

Tools used in this conversation (47 total):
1. Bash: git status
2. Grep: searched for "function" in src/
3. Read: src/main.ts
4. Edit: src/main.ts (modified lines 45-52)
5. Bash: npm test
6. Task: "Research authentication patterns"
7. Bash: git diff --cached
8. Bash: git commit -m "Fix validation logic"
... [39 more tools]